thumb|Josef Bayer Josef Bayer (6 March 1852 – 12 March 1913) was an Austrian composer and the director of the Austrian Court Ballet from 1883 until his death. He was born and died in Vienna. Biogra
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9fa3d74d36ef3a7b2b582285f72c5584637e9669c5a6d3b82ae2c0f4bb5afd. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69151f97-88ab-4330-ab16-2ae2a700840e.json and https://artists.proofprofile.net/proofs/artist/69151f97-88ab-4330-ab16-2ae2a700840e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Josef Bayer: Die Puppenfee - music to the ballet
Bayer: Fairy Doll (The) (Complete Ballet)
Die Puppenfee (The Fairy Doll): Vorspiel: Allegro
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f82cb3d66e1d75ef00c2c1ec4a8e561564fa968f90bfd3f786a3fa01f6e691d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308501.
Die Puppenfee (The Fairy Doll): No. 11 Harlekin: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794433438490be06bb823839832e27104e80a25f33ee24429a861a21b8d3e323. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308512.
Die Puppenfee (The Fairy Doll): No. 12 Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cff2584abee8aba24dfcc446f78adaf473831ca8d8be01c7300fbe7ee3261ee. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308513.
Die Puppenfee (The Fairy Doll): No. 15 Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dbe36f73a3aa3e5e73ac8d376b804d546f254908c578a5a7a8cea836063e4b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308516.
Die Puppenfee (The Fairy Doll): No. 18 Marsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10603622720cb65019122bb21185cf934886d92bae145e5cd529b9e2d924cb9. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308519.
Die Puppenfee (The Fairy Doll): No. 19 Galop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff2b6894ce9f37ae1891b1269abeb2ae100e0f6e30debfc7cc7558c10dd989. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308520.
Sonne und Erde (Sun and Earth): Scene IV 'Winter': Polka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15fd8f48b6dd75c207adace825651f805c3b47f9a2154f062598114be486da7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190308523.